New KAlgebra and Material Design on KDE Android apps

[Thomas Pfeiffer]

On Sunday 01 November 2015 00:58:20 you wrote:
> > Related to KAlgebra in particular:
> > - The field where the formula is entered is much too small. It the most
> > important element in the console screen, but it's tiny and hard to hit.
> 
> Fair enough, I'll look into fixing it. Do you think it's the same
> problem for 2D and 3D plots?

Well, they do /look/ a bit bigger there, but yes, they should be quite a bit 
bigger there as well, since they're equally important there.

> > - There is a "Go" button in Value Table, whereas in all other screens, the
> > return button starts the calculation/drawing
> 
> I guess the question here is "where should I press enter to run the
> value table?".

Indeed. I must admit I haven't found a good solution yet, just wanted to point 
out the inconsistency.

> > - When Graph 2D or Graph3D are opened, the edit field is filled with a
> > formula, but the graph is not drawn until one goes into the edit field and
> > presses return. This is confusing.
> 
> I see, the idea there

Could you just have the function in the box drawn when opening the screen, 
even though it was not submitted by the user?

> > - The "Variables" screen has several problems:
> >   - All I can see there are constants, no variables
> >   - I have no idea what this screen is for
> 
> Yeah, needs some work I guess. The idea is that there's global
> variables that are available throughout the application and this view
> can present it.

They're still constants, though ;)

> >   - I ave no idea what some of those constants (e.g. f457) are for
> 
> Functions are also global variables.

What benefit is there in entering f457 instead of 2*x ?

> >   - As far as I know, ":=" is not correct mathematical notation, it would
> >   just> 
> > be "="
> :
> := is assignation, = is boolean equality.

I know that's the case in programming, but is it also the case in maths? I may 
be wrong here, in which case you can simply ignore this. I just have never 
seen := in any math book, only in programming books.

> > I hope this if helpful!
> > 
> > Apart from these issues, both the Material Design components and KAlgebra
> > are already quite impressive. Great work you guys!
> :
> :D Thanks to you for spending the time!

Sure, it's what I do :)